package cn.webrx;

import java.util.Scanner;


public class Input1 {
    public static void main(String[] args) {
        var sc = new Scanner(System.in);
        //sc.nextDouble()
        //sc.nextInt()
        //sc.next()
        //sc.nextLine()

        System.out.print(2 * 3);
        System.out.println();
        System.out.println(3 * 3);
        System.out.print("hello:" + "李四" + "。\n");
        System.out.printf("hello:%s。%n", "李四");

        System.exit(0);
        //System.in java系统的输入流
        //InputStream in = System.in;
        //Scanner sc = new Scanner(in);
        //sc.nextInt()
        //var d = sc.nextDouble();
        //System.out.println(d);
        //System.out.println(System.getProperty("java.version"));


        //java系统的输出流
        //PrintStream out = System.out;
        //out.print(10 * 2 * 3 / 2 - (1 + 5));
    }
}
